diff --git a/tcp.c b/tcp.c
index 914a074..3d3df4c 100644
--- a/tcp.c
+++ b/tcp.c
@@ -333,8 +333,6 @@
 
 #define ACK_IF_NEEDED	0		/* See tcp_send_flag() */
 
-#define TAPSIDE(conn_)	((conn_)->f.pif[1] == PIF_TAP)
-
 #define CONN_IS_CLOSING(conn)						\
 	(((conn)->events & ESTABLISHED) &&				\
 	 ((conn)->events & (SOCK_FIN_RCVD | TAP_FIN_RCVD)))
@@ -673,10 +671,11 @@ void conn_event_do(const struct ctx *c, struct tcp_tap_conn *conn,
  */
 static int tcp_rtt_dst_low(const struct tcp_tap_conn *conn)
 {
+	const struct flowside *tapside = TAPFLOW(conn);
 	int i;
 
 	for (i = 0; i < LOW_RTT_TABLE_SIZE; i++)
-		if (inany_equals(&conn->faddr, low_rtt_dst + i))
+		if (inany_equals(&tapside->faddr, low_rtt_dst + i))
 			return 1;
 
 	return 0;
@@ -691,6 +690,7 @@ static void tcp_rtt_dst_check(const struct tcp_tap_conn *conn,
 			      const struct tcp_info *tinfo)
 {
 #ifdef HAS_MIN_RTT
+	const struct flowside *tapside = TAPFLOW(conn);
 	int i, hole = -1;
 
 	if (!tinfo->tcpi_min_rtt ||
@@ -698,7 +698,7 @@ static void tcp_rtt_dst_check(const struct tcp_tap_conn *conn,
 		return;
 
 	for (i = 0; i < LOW_RTT_TABLE_SIZE; i++) {
-		if (inany_equals(&conn->faddr, low_rtt_dst + i))
+		if (inany_equals(&tapside->faddr, low_rtt_dst + i))
 			return;
 		if (hole == -1 && IN6_IS_ADDR_UNSPECIFIED(low_rtt_dst + i))
 			hole = i;
@@ -710,7 +710,7 @@ static void tcp_rtt_dst_check(const struct tcp_tap_conn *conn,
 	if (hole == -1)
 		return;
 
-	low_rtt_dst[hole++] = conn->faddr;
+	low_rtt_dst[hole++] = tapside->faddr;
 	if (hole == LOW_RTT_TABLE_SIZE)
 		hole = 0;
 	inany_from_af(low_rtt_dst + hole, AF_INET6, &in6addr_any);
@@ -865,8 +865,10 @@ static int tcp_hash_match(const struct tcp_tap_conn *conn,
 			  const union inany_addr *faddr,
 			  in_port_t eport, in_port_t fport)
 {
-	if (inany_equals(&conn->faddr, faddr) &&
-	    conn->eport == eport && conn->fport == fport)
+	const struct flowside *tapside = TAPFLOW(conn);
+
+	if (inany_equals(&tapside->faddr, faddr) &&
+	    tapside->eport == eport && tapside->fport == fport)
 		return 1;
 
 	return 0;
@@ -900,7 +902,10 @@ static uint64_t tcp_hash(const struct ctx *c, const union inany_addr *faddr,
 static uint64_t tcp_conn_hash(const struct ctx *c,
 			      const struct tcp_tap_conn *conn)
 {
-	return tcp_hash(c, &conn->faddr, conn->eport, conn->fport);
+	const struct flowside *tapside = TAPFLOW(conn);
+
+	return tcp_hash(c, &tapside->faddr, tapside->eport,
+			tapside->fport);
 }
 
 /**
@@ -1035,10 +1040,12 @@ void tcp_defer_handler(struct ctx *c)
  * @seq:	Sequence number
  */
 static void tcp_fill_header(struct tcphdr *th,
-			       const struct tcp_tap_conn *conn, uint32_t seq)
+			    const struct tcp_tap_conn *conn, uint32_t seq)
 {
-	th->source = htons(conn->fport);
-	th->dest = htons(conn->eport);
+	const struct flowside *tapside = TAPFLOW(conn);
+
+	th->source = htons(tapside->fport);
+	th->dest = htons(tapside->eport);
 	th->seq = htonl(seq);
 	th->ack_seq = htonl(conn->seq_ack_to_tap);
 	if (conn->events & ESTABLISHED)	{
@@ -1070,7 +1077,8 @@ static size_t tcp_fill_headers4(const struct ctx *c,
 				size_t dlen, const uint16_t *check,
 				uint32_t seq)
 {
-	const struct in_addr *a4 = inany_v4(&conn->faddr);
+	const struct flowside *tapside = TAPFLOW(conn);
+	const struct in_addr *a4 = inany_v4(&tapside->faddr);
 	size_t l4len = dlen + sizeof(*th);
 	size_t l3len = l4len + sizeof(*iph);
 
@@ -1112,10 +1120,11 @@ static size_t tcp_fill_headers6(const struct ctx *c,
 				struct ipv6hdr *ip6h, struct tcphdr *th,
 				size_t dlen, uint32_t seq)
 {
+	const struct flowside *tapside = TAPFLOW(conn);
 	size_t l4len = dlen + sizeof(*th);
 
 	ip6h->payload_len = htons(l4len);
-	ip6h->saddr = conn->faddr.a6;
+	ip6h->saddr = tapside->faddr.a6;
 	if (IN6_IS_ADDR_LINKLOCAL(&ip6h->saddr))
 		ip6h->daddr = c->ip6.addr_ll_seen;
 	else
@@ -1154,7 +1163,8 @@ size_t tcp_l2_buf_fill_headers(const struct ctx *c,
 			       struct iovec *iov, size_t dlen,
 			       const uint16_t *check, uint32_t seq)
 {
-	const struct in_addr *a4 = inany_v4(&conn->faddr);
+	const struct flowside *tapside = TAPFLOW(conn);
+	const struct in_addr *a4 = inany_v4(&tapside->faddr);
 
 	if (a4) {
 		return tcp_fill_headers4(c, conn, iov[TCP_IOV_TAP].iov_base,
@@ -1465,6 +1475,7 @@ static void tcp_seq_init(const struct ctx *c, struct tcp_tap_conn *conn,
 			 const struct timespec *now)
 {
 	struct siphash_state state = SIPHASH_INIT(c->hash_secret);
+	const struct flowside *tapside = TAPFLOW(conn);
 	union inany_addr aany;
 	uint64_t hash;
 	uint32_t ns;
@@ -1474,10 +1485,10 @@ static void tcp_seq_init(const struct ctx *c, struct tcp_tap_conn *conn,
 	else
 		inany_from_af(&aany, AF_INET6, &c->ip6.addr);
 
-	inany_siphash_feed(&state, &conn->faddr);
+	inany_siphash_feed(&state, &tapside->faddr);
 	inany_siphash_feed(&state, &aany);
 	hash = siphash_final(&state, 36,
-			     (uint64_t)conn->fport << 16 | conn->eport);
+			     (uint64_t)tapside->fport << 16 | tapside->eport);
 
 	/* 32ns ticks, overflows 32 bits every 137s */
 	ns = (now->tv_sec * 1000000000 + now->tv_nsec) >> 5;
@@ -1766,11 +1777,6 @@ static void tcp_conn_from_tap(struct ctx *c, sa_family_t af,
 	if (!(conn->wnd_from_tap = (htons(th->window) >> conn->ws_from_tap)))
 		conn->wnd_from_tap = 1;
 
-	inany_from_af(&conn->faddr, af, daddr);
-
-	conn->fport = dstport;
-	conn->eport = srcport;
-
 	conn->seq_init_from_tap = ntohl(th->seq);
 	conn->seq_from_tap = conn->seq_init_from_tap + 1;
 	conn->seq_ack_to_tap = conn->seq_from_tap;
@@ -2314,10 +2320,6 @@ static void tcp_tap_conn_from_sock(struct ctx *c, in_port_t dstport,
 	conn->ws_to_tap = conn->ws_from_tap = 0;
 	conn_event(c, conn, SOCK_ACCEPTED);
 
-	conn->faddr = saddr;
-	conn->fport = srcport;
-	conn->eport = dstport;
-
 	tcp_seq_init(c, conn, now);
 	tcp_hash_insert(c, conn);
 
diff --git a/tcp_conn.h b/tcp_conn.h
index f80ef67..4e7c57a 100644
--- a/tcp_conn.h
+++ b/tcp_conn.h
@@ -13,19 +13,16 @@
  * struct tcp_tap_conn - Descriptor for a TCP connection (not spliced)
  * @f:			Generic flow information
  * @in_epoll:		Is the connection in the epoll set?
+ * @retrans:		Number of retransmissions occurred due to ACK_TIMEOUT
+ * @ws_from_tap:	Window scaling factor advertised from tap/guest
+ * @ws_to_tap:		Window scaling factor advertised to tap/guest
  * @tap_mss:		MSS advertised by tap/guest, rounded to 2 ^ TCP_MSS_BITS
  * @sock:		Socket descriptor number
  * @events:		Connection events, implying connection states
  * @timer:		timerfd descriptor for timeout events
  * @flags:		Connection flags representing internal attributes
- * @retrans:		Number of retransmissions occurred due to ACK_TIMEOUT
- * @ws_from_tap:	Window scaling factor advertised from tap/guest
- * @ws_to_tap:		Window scaling factor advertised to tap/guest
  * @sndbuf:		Sending buffer in kernel, rounded to 2 ^ SNDBUF_BITS
  * @seq_dup_ack_approx:	Last duplicate ACK number sent to tap
- * @faddr:		Guest side forwarding address (guest's remote address)
- * @eport:		Guest side endpoint port (guest's local port)
- * @fport:		Guest side forwarding port (guest's remote port)
  * @wnd_from_tap:	Last window size from tap, unscaled (as received)
  * @wnd_to_tap:		Sending window advertised to tap, unscaled (as sent)
  * @seq_to_tap:		Next sequence for packets to tap
@@ -49,6 +46,10 @@ struct tcp_tap_conn {
 	unsigned int	ws_from_tap	:TCP_WS_BITS;
 	unsigned int	ws_to_tap	:TCP_WS_BITS;
 
+#define TCP_MSS_BITS			14
+	unsigned int	tap_mss		:TCP_MSS_BITS;
+#define MSS_SET(conn, mss)	(conn->tap_mss = (mss >> (16 - TCP_MSS_BITS)))
+#define MSS_GET(conn)		(conn->tap_mss << (16 - TCP_MSS_BITS))
 
 	int		sock		:FD_REF_BITS;
 
@@ -77,13 +78,6 @@ struct tcp_tap_conn {
 #define ACK_TO_TAP_DUE		BIT(3)
 #define ACK_FROM_TAP_DUE	BIT(4)
 
-
-#define TCP_MSS_BITS			14
-	unsigned int	tap_mss		:TCP_MSS_BITS;
-#define MSS_SET(conn, mss)	(conn->tap_mss = (mss >> (16 - TCP_MSS_BITS)))
-#define MSS_GET(conn)		(conn->tap_mss << (16 - TCP_MSS_BITS))
-
-
 #define SNDBUF_BITS		24
 	unsigned int	sndbuf		:SNDBUF_BITS;
 #define SNDBUF_SET(conn, bytes)	(conn->sndbuf = ((bytes) >> (32 - SNDBUF_BITS)))
@@ -91,11 +85,6 @@ struct tcp_tap_conn {
 
 	uint8_t		seq_dup_ack_approx;
 
-
-	union inany_addr faddr;
-	in_port_t	eport;
-	in_port_t	fport;
-
 	uint16_t	wnd_from_tap;
 	uint16_t	wnd_to_tap;
 
@@ -109,22 +98,24 @@ struct tcp_tap_conn {
 /**
  * struct tcp_splice_conn - Descriptor for a spliced TCP connection
  * @f:			Generic flow information
- * @in_epoll:		Is the connection in the epoll set?
  * @s:			File descriptor for sockets
  * @pipe:		File descriptors for pipes
- * @events:		Events observed/actions performed on connection
- * @flags:		Connection flags (attributes, not events)
  * @read:		Bytes read (not fully written to other side in one shot)
  * @written:		Bytes written (not fully written from one other side read)
-*/
+ * @events:		Events observed/actions performed on connection
+ * @flags:		Connection flags (attributes, not events)
+ * @in_epoll:		Is the connection in the epoll set?
+ */
 struct tcp_splice_conn {
 	/* Must be first element */
 	struct flow_common f;
 
-	bool in_epoll	:1;
 	int s[SIDES];
 	int pipe[SIDES][2];
 
+	uint32_t read[SIDES];
+	uint32_t written[SIDES];
+
 	uint8_t events;
 #define SPLICE_CLOSED			0
 #define SPLICE_CONNECT			BIT(0)
@@ -139,8 +130,7 @@ struct tcp_splice_conn {
 #define RCVLOWAT_ACT(sidei_)		((sidei_) ? BIT(4) : BIT(3))
 #define CLOSING				BIT(5)
 
-	uint32_t read[SIDES];
-	uint32_t written[SIDES];
+	bool in_epoll	:1;
 };
 
 /* Socket pools */
diff --git a/tcp_internal.h b/tcp_internal.h
index 51aaa16..4f61e5c 100644
--- a/tcp_internal.h
+++ b/tcp_internal.h
@@ -39,7 +39,11 @@
 #define OPT_SACKP	4
 #define OPT_SACK	5
 #define OPT_TS		8
-#define CONN_V4(conn)		(!!inany_v4(&(conn)->faddr))
+
+#define TAPSIDE(conn_)	((conn_)->f.pif[1] == PIF_TAP)
+#define TAPFLOW(conn_)	(&((conn_)->f.side[TAPSIDE(conn_)]))
+
+#define CONN_V4(conn)		(!!inany_v4(&TAPFLOW(conn)->faddr))
 #define CONN_V6(conn)		(!CONN_V4(conn))
 
 /*